Other ESP for an AFN

Hello fellow DIY enthusiasts,

Now, the time has come, and I have a question for you.
As far as I know, my car (a 1998 Passat Syncro with 81 kW) has a VP37 injection pump with a 10mm plunger. However, there's also the possibility of 11mm or even 12mm plungers being used in a VP37. Okay, bitte gib mir den deutschen Text, den du übersetzt haben möchtest.
Okay, here's the translation:

"Now my question: In which type of car is such a pump installed, and can I use it in my car?" Or what is the part number for such a pump from VW or Bosch?


Sincerely,
Markus.

Hi,

You know how expensive an ESP is, right?

Best regards,

Jan.

I know that a new ESP isn't cheap. But that wasn't the point. There's always the option of buying something like that used.

Sincerely,
Markus.

Let's put it another way: what do you hope to achieve with a larger booster pump? It's definitely not just for fun, right?

@mkmeier:

To the best of my knowledge, VP37 pumps with 11mm plungers are used in the automatic versions of the TDIs, and they are used in conjunction with smaller injectors.
However, I don't know if that applies to AFN. I only know for sure about the ALH engine, which in the automatic transmission version is equipped with 11mm pump plungers and 0.158mm nozzles (manual transmission has 10mm plungers and 0.184mm nozzles).
If the AFN machine is also available with an automatic transmission, I would like to investigate that option.

Regards,
Alex.